ArticleTropical animal health and production2026
Green-synthesized ZnO nanoparticles utilizing Garcinia mangostana leaves enhance performance, carcass traits, meat quality, antioxidant status, and insuline-like growth factor-1 gene expression in broiler chickens.
Article in Tropical animal health and production, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
The study aimed to evaluate the impact of Zinc oxide nanoparticles (ZnO-NPs) on growth performance, carcass traits, meat color, antioxidant activity, and insuline-like growth factor-1 (IGF-1) gene expression in broiler chickens. This study used 200 Cobb500 broiler chicks aged two days. The observation was conducted for 5 weeks and used a completely randomized design with 4 treatments and 5 replications (10 chicks, each replicates). The treatment were: Control (basal diet); ZnO-NPs 50 (control + 50 mg Zn/kg); ZnO-NPs 75 (control + 75 mg Zn/kg); ZnO-NPs 100 (control + 100 mg Zn/kg). Performance, carcass traits, Zn content and antioxidant activity, meat color, and IGF-1 gene expression were observed. Supplementation of ZnO-NPs (d 1-14) significantly (P < 0.05) increased body weight and improved feed-to-gain ratio, whereas no effects (P > 0.05) were observed on average daily gain, average daily feed intake, or feed-to-gain ratio during days 15-35. Zinc oxide nanoparticles (ZnO-NPs) also significantly (P < 0.05) increased the hue (h*) value while reducing the lightness (L*) and redness (a*) of the breast. Supplementation enhanced Zn deposition and SOD enzyme activity, accompanied by a decrease in MDA concentration in the breast. However, ZnO-NPs did not affect (P > 0.05) carcass traits (percentage of breast, back, thigh, and drumstick meat), nor did the yellowness (b*) and chromaticity (c*) of breast meat and IGF-1 gene expression in the small intestine. Overall, the addition of ZnO-NPs at levels up to 100 mg Zn/kg in broiler chicken feed during the growth phase leads to optimal improvements in performance parameters. Mechanistically, ZnO-NPs function as redox modulators rather than direct antioxidants, eliciting dose-dependent pro-oxidant and antioxidant responses in broiler chickens. This modulatory effect contributes to enhanced antioxidant status, a tendency to support the IGF-1 gene expression profile, and a reduction in oxidative stress. Furthermore, breast meat derived from chickens supplemented with ZnO-NPs demonstrates potential as a functional food with added health benefits.
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